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Question
The diagram shows a current-carrying coil passing through a cardboard sheet. Draw three magnetic lines of force on the board.
State two factors on which magnitude of magnetic field at the centre depends.
Solution
Figure shows the magnetic lines of force due to current-carrying coil.
The magnitude of the magnetic field at the center of coil depends on:
(i) the strength of the current in the coil, and
(ii) the radius of coil.
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